I'm going through the weeding out of files now.  Haven't yet found a culprit.

I've recently had the same situation with the jump bug and Simmies unable to make calls at all (they begin dialing and jump out).  I've diligently removed all hacks to isolate the problem... Unfortunately, removing the phone hack seemed to be the only solution at the moment.  I'm still searching because it was running flawlessly until a week ago.

I'm glad to see someone was successful... I haven't been able to find the secretwitchlot file and hadn't known about entering it through SimPE.

I have been wanting a fix for this light for the longest.  Very cool...